초록 ▼

A combustion liner and cooling sleeve assembly for a turbine combustor includes a substantially cylindrical combustion liner; and a substantially cylindrical outer cooling sleeve surrounding at least an axial portion of the combustion liner; wherein the outer cooling sleeve is secured to the combust

A combustion liner and cooling sleeve assembly for a turbine combustor includes a substantially cylindrical combustion liner; and a substantially cylindrical outer cooling sleeve surrounding at least an axial portion of the combustion liner; wherein the outer cooling sleeve is secured to the combustion liner by a weld at one end of the cooling sleeve at its aft end, with a predetermined radial gap therebetween, the gap determined by respective operating temperatures and thermal expansion coefficients. A method of reducing crack propensity in a substantially cylindrical combustion liner and substantially cylindrical cooling sleeve assembly where one end of said cooling sleeve is welded to the combustion liner, includes the steps of: a) determining a radial gap between the combustion liner and the outer cooling sleeve as a function of operating temperatures and thermal expansion coefficients of the liner and the cooling sleeve; b) forming the outer cooling sleeve with a diameter sufficient to provide the radial gap; c) swaging the outer end of the cooling sleeve to bring the end of the outer cooling sleeve into engagement With the combustion liner; and d) welding the outer cooling sleeve to the combustion liner.

대표청구항 ▼

1. A combustion liner and outer cooling sleeve assembly for a turbine combustor comprising:a substantially cylindrical combustion liner having a forward end and an aft end; and a substantially cylindrical outer cooling sleeve surrounding at least an axial portion of said combustion liner; wherein sa

1. A combustion liner and outer cooling sleeve assembly for a turbine combustor comprising:a substantially cylindrical combustion liner having a forward end and an aft end; and a substantially cylindrical outer cooling sleeve surrounding at least an axial portion of said combustion liner; wherein said outer cooling sleeve is inwardly formed at one end thereof and secured to said combustion liner by a weld at said one end of said outer cooling sleeve, to thereby establish a predetermined radial gap between said combustion liner and said outer cooling sleeve extending at least partially about said combustion liner, said radial gap determined by respective operating temperatures and thermal expansion coefficients of said combustion liner and said outer cooling sleeve.